#try except else finally
# try:
#     可能引发异常的代码块
# except:
#     处理异常的执行语句
# else:
#     没有异常时执行的语句
# finally:
#     无论是否有异常都要执行的语句

num = 0
try:
    a = 10 / num
except ZeroDivisionError as e:
    print(f"{e}")
else:
    print("true")
finally:
    print("over")







